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<head>
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    <title>Document</title>
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<body>
    <div id="app">
       
    </div>
    <script type="text/babel">
    // var ele = "<h1 className="abc">你好</h1>";
    // var ele = (<h1 className="abc">你好</h1>);
        var ele = React.createElement(
            "h1",
            {
                className:"abc"
            },
            "你好"
        )
    ReactDOM.render(
       ele,
        document.getElementById("app")
    )
    </script>
</body>
</html>